Bulb



FIG. 1 is a perspective view of a bulb showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The broken lines illustrate structure or features which form no part of the claimed design.

The drawings include CAD lines that represent contour and not surface decoration.

The claimed design is preferably translucent. 

CLAIM The ornamental design for a bulb, as shown and described. 